This lecture explores the unique electronic properties of graphene, including its quantum conductance and special electronic properties. It delves into the fabrication processes of graphene nanoribbons, the effects of quantum confinement, and the appearance of zero conductivity. The presentation also covers the ideal and disordered graphene edges, their impact on band structure, and the morphology of graphene edges. The lecture concludes with a discussion on the potential applications of graphene nanoribbons in various fields.